Cooling
To control dimensions, surface appearance and warpage, it is important to have as much control over the cooling of the part as possible. Flow rate is a major factor in heat removal. By creating turbulent flow, heat extraction and cycle times can be improved. To control warpage in many designs, it is essential that the mold cooling be targeted to provide extra heat extraction in the heavier wall portions of the part. The overall flow pattern also affects the part quality. Water warms as it flows through the mold. The mold should contain several inlets and outlets in an oscillating cooling pattern. A cold mold surface can also cause problems in reproducing surface details such as texture. Water line layout should remove as much heat as quickly as possible without creating cold spots on the surface of the tool.

Tooling engineers can target water lines near each critical section of the mold to provide the dimensional control and appearance you need.